a simple highschooler named megumi taiyo meets a stranger called "the wolf." she keeps getting this strange feeling of deja vu... where had she seen him before? she loses her phone on the train, and when she gets home, her phone is tucked in a box with a note that says "meet me on the train." weird. a couple of days later, an app that she found allows her into a new world, where she meets rin and aira, in the same situation. who is the wolf? why is she here? find out, in wolf on the train!